ASoC: samsung: Fix error paths in the I2S driver's probe()

Ensure they secondary DAI device is freed properly when asoc_dma_platform
registration fails.  This change is needed for proper deferred probe support
and will help preventing situations when the CPU DAI's initialization
completes without required DMA resources.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>